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TANK ASSESSMENT Covey Auto Express Inc. 1444 EI Pinal Dr.,Stockton,CA 95205 <br /> Waste Oil Holding Tank Inspection 29 Aug 2012, D.K.Barber PE C 21,210,exp. 9130115 <br /> Est.Tank Age: 10 years Certified Steel Tank Institute, Level Ii, AST AC18709 <br /> Est.Tank Life of Service: 30 years <br /> Red 275 GA single wall steel UL80 AST,Waste Oil Storage, Mfg.: Unknown Name or date <br /> 22CCR§66265. <br /> Shape: Oval UL80 Single Wall <br /> Orientation: Horizontal Reference Sketch in Calculations & Photo 192(k)(1) <br /> Height 44 IN, Length 59 IN, Width 26.5 IN <br /> Location: Above ground on a reinforced Portland cement concrete floor 192(k)(2)(A) <br /> Thickness & method of determination: 192(k)(2)(B) <br /> Primary Shell 14 gauge steel (0.072-0.077 IN) NDT Systems, TG110-DL Ultrasonic Testing <br /> Lining material &thickness. None <br /> Corrosion Protection Equipment: None, exterior protective coating in good condition 192(k)(5) <br /> Structural Support: 4 @ 1 '/2 IN pipe Non-bolted Anchorage <br /> AST elevated approximately 3 IN above Portland cement concrete foundation pad <br /> Other identifying features: UL P79251, red enamel color finish <br /> Chemical compatibility findings:The materials noted in the material;storage section described above are <br /> compatible ith the material of construction or lining material noted in the tank construction section above. <br /> Initials:4- <br /> Piping &Ancillary Equipment (pumps) 192(k)(2)(C&D) <br /> Piping Material of Construction: N/A <br /> Piping Size: N/A <br /> Pump Location: N/A <br /> Pump type/Capacity: N/A <br /> No Overfill by-pass w/auditable whistle <br /> Material Storage <br /> Material & Characteristics: Waste Oil-Used Engine, ATF, Hydr.Oil, Gear Oil 192(k)(8) <br /> Non-RCRA Hazardous Waste, Class III combustible liquid <br /> Specific Gravity: SpG 0.85 -0.91 assume 0.91 <br /> Operating Capacity : Gross 275 GA Limit to 90% or 250 GA for Operating Capacity <br /> Visual Inspection 192(k)(9) <br /> Tank parameters at time of inspection: Partially full of waste oil <br /> Acute visual evidence of leaks: None <br /> Condition of interior surfaces: Interstitial void was dry, but minor deposit in bottom <br /> Condition of exterior surfaces: Paint Good condition <br /> Condition of nozzles, flanges, fittings at tank: Good condition, all topside <br /> Condition of piping: Good condition, no leaks <br /> Visual Inspection findings:A visual inspection of the tank and its affiliated pumps,pumping and ancillary <br /> equipment did not reveal signs of leaks,corrosion,weld cracks or breaks,or scrapes in the protective coating <br /> which may contribute to the likelihood of a release occurring from the tank system. A deGhription of all <br /> discrepancies noted during the visual inspection Is included with this report. Initials: <br />